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不(bu)同(tong)種類(lei)空(kong)(kong)氣微(wei)(wei)生(sheng)物(wu)(wu)采(cai)(cai)樣(yang)(yang)(yang)(yang)器(qi)(qi)性(xing)能差(cha)異,在一般情況下，采(cai)(cai)集(ji)小粒子(zi)都有很高的(de)(de)(de)效率。室內空(kong)(kong)氣微(wei)(wei)生(sheng)物(wu)(wu)污染的(de)(de)(de)程度是(shi)衡量(liang)室內空(kong)(kong)氣質量(liang)好(hao)壞的(de)(de)(de)重要(yao)參(can)數之一，要(yao)求空(kong)(kong)氣微(wei)(wei)生(sheng)物(wu)(wu)采(cai)(cai)樣(yang)(yang)(yang)(yang)器(qi)(qi)，必須具有獲得大(da)的(de)(de)(de)采(cai)(cai)樣(yang)(yang)(yang)(yang)效率，以確(que)保采(cai)(cai)集(ji)到的(de)(de)(de)空(kong)(kong)氣微(wei)(wei)生(sheng)物(wu)(wu)在統計學(xue)上有顯著(zhu)性(xing)和(he)代表性(xing)。將空(kong)(kong)氣微(wei)(wei)生(sheng)物(wu)(wu)收集(ji)在半固態的(de)(de)(de)營(ying)養培養基上的(de)(de)(de)撞擊式(shi)采(cai)(cai)樣(yang)(yang)(yang)(yang)器(qi)(qi)，采(cai)(cai)樣(yang)(yang)(yang)(yang)濃度一般不(bu)應(ying)超過105CFU／m3，否(fou)則會發(fa)生(sheng)超載現象。同(tong)時，要(yao)求采(cai)(cai)樣(yang)(yang)(yang)(yang)器(qi)(qi)的(de)(de)(de)空(kong)(kong)氣采(cai)(cai)樣(yang)(yang)(yang)(yang)流(liu)量(liang)要(yao)穩定，這(zhe)樣(yang)(yang)(yang)(yang)才能確(que)保采(cai)(cai)樣(yang)(yang)(yang)(yang)性(xing)能穩定可靠(kao)。如果使(shi)用非(fei)恒(heng)流(liu)型采(cai)(cai)樣(yang)(yang)(yang)(yang)器(qi)(qi)采(cai)(cai)樣(yang)(yang)(yang)(yang)時，必須經常校準空(kong)(kong)氣采(cai)(cai)樣(yang)(yang)(yang)(yang)流(liu)量(liang)。